Canadian champion and millionaire Dancethruthedawn, a Sam-Son homebred, will not have an opportunity to emulate her dam, Dance Smartly, with a Breeders' Cup Distaff victory (gr. I). The 4-year-old daughter of Mr. Prospector has been retired because of a non-displaced hairline fracture of her right ankle. The injury occurred during a fourth-place finish in the Oct. 6 Overbrook Spinster Stakes (gr. I) at Keeneland and was discovered by trainer Mark Frostad after he had X-rays taken the following weekend."She didn't seem comfortable in the race," said Tammy Samuel-Balaz, who manages the Sam-Son operation. "Mark took the X-rays as a precaution going into the Breeders' Cup (Distaff, gr, I). That would have been her last race. She's not lame and will not require surgery. All she needs is stall rest."Dancethruthedawn won the Go for Wand Handicap (gr. I) at Saratoga and the Doubledogdare Stakes at the Keeneland spring meeting this year. Last year, she emulated Dance Smartly (by Danzig) by winning the Queen's Plate over males and the Canadian Oaks. She was named Canada's champion 3-year-old filly and finished third in balloting for Horse of the Year.Dancethruthedawn retires with seven wins from 16 starts and earnings of $1,609,643. Leading sire A.P. Indy, the sire of Dance Smartly's two youngest foals, has been mentioned as a possible mate for Dancethruthedawn.